 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
  * An open source application development framework for PHP 5.1.6 or newer
 	 *
 	 * @package		CodeIgniter
 	 * @author		ExpressionEngine Dev Team
 	 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 	 * @license		http://codeigniter.com/user_guide/license.html
 	 	 * @link		http://codeigniter.com
 	 	 * @since		Version 1.0
 	 	 * @filesource
 	 	 */

 // ------------------------------------------------------------------------

 /**
  * Exceptions Class
  *
  * @package		CodeIgniter
  * @subpackage	Libraries
  * @category	Exceptions
  * @author		ExpressionEngine Dev Team
  * @link		http://codeigniter.com/user_guide/libraries/exceptions.html
  */
 class CI_Exceptions {
 	var $action;
 	var $severity;
 	var $message;
 	var $filename;
 	var $line;

 	/**
 	 * Nesting level of the output buffering mechanism
 	  *
 	  * @var int
 	  * @access public
 	  */
 	var $ob_level;

 	/**
 	 * List if available error levels
 	 *
 	 * @var array
 	 * @access public
 	 */
 	var $levels = array(
 	E_ERROR				=>	'Error',
 	E_WARNING			=>	'Warning',
 	E_PARSE				=>	'Parsing Error',
 	E_NOTICE			=>	'Notice',
 	E_CORE_ERROR		=>	'Core Error',
 	E_CORE_WARNING		=>	'Core Warning',
 	E_COMPILE_ERROR		=>	'Compile Error',
 	E_COMPILE_WARNING	=>	'Compile Warning',
 	E_USER_ERROR		=>	'User Error',
 	E_USER_WARNING		=>	'User Warning',
 	E_USER_NOTICE		=>	'User Notice',
 	E_STRICT			=>	'Runtime Notice'
 	);


 	/**
 	 * Constructor
 	 */
 	public function __construct()
  		{
  			$this->ob_level = ob_get_level();
  			// Note:  Do not log messages from this constructor.
  		}

  		// --------------------------------------------------------------------

  		/**
  		 * Exception Logger
  		 *
  		 * This function logs PHP generated error messages
  		 *
  		 * @access	private
  		 * @param	string	the error severity
  		 * @param	string	the error string
  		 * @param	string	the error filepath
  		 * @param	string	the error line number
  		 * @return	string
  		 */
  		function log_exception($severity, $message, $filepath, $line)
  		{
  			$severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity];

  			log_message('error', 'Severity: '.$severity.'  --> '.$message. ' '.$filepath.' '.$line, TRUE);
  		}

  		// --------------------------------------------------------------------

  		/**
  		 * 404 Page Not Found Handler
  		 *
  		 * @access	private
  		 * @param	string	the page
  		 * @param 	bool	log error yes/no
  		 * @return	string
  		 */
  		function show_404($page = '', $log_error = TRUE)
  		{
  			$heading = "404 Page Not Found";
  			$message = "The page you requested was not found.";

  			// By default we log this, but allow a dev to skip it
  			if ($log_error)
  			{
  				log_message('error', '404 Page Not Found --> '.$page);
  			}

  			echo $this->show_error($heading, $message, 'error_404', 404);
  			exit;
  		}

  		// --------------------------------------------------------------------

  		/**
  		 * General Error Page
  		 *
  		 * This function takes an error message as input
  		 * (either as a string or an array) and displays
  		 * it using the specified template.
  		 *
  		 * @access	private
  		 * @param	string	the heading
  		 * @param	string	the message
  		 * @param	string	the template name
  		 * @param 	int		the status code
  		 * @return	string
  		 */
  		function show_error($heading, $message, $template = 'error_general', $status_code = 500)
  		{
  			set_status_header($status_code);

  			$message = '<p>'.implode('</p><p>', ( ! is_array($message)) ? array($message) : $message).'</p>';

  			if (ob_get_level() > $this->ob_level + 1)
  			{
  				ob_end_flush();
  			}
  			ob_start();
  			include(APPPATH.'errors/'.$template.'.php');
  			$buffer = ob_get_contents();
  			ob_end_clean();
  			return $buffer;
  		}

  		// --------------------------------------------------------------------

  		/**
  		 * Native PHP error handler
  		 *
  		 * @access	private
  		 * @param	string	the error severity
  		 * @param	string	the error string
  		 * @param	string	the error filepath
  		 * @param	string	the error line number
  		 * @return	string
  		 */
  		function show_php_error($severity, $message, $filepath, $line)
  		{
  			$severity = ( ! isset($this->levels[$severity])) ? $severity : $this->levels[$severity];

  			$filepath = str_replace("\\", "/", $filepath);

  			// For safety reasons we do not show the full file path
  			if (FALSE !== strpos($filepath, '/'))
  			{
  				$x = explode('/', $filepath);
  				$filepath = $x[count($x)-2].'/'.end($x);
  			}

  			if (ob_get_level() > $this->ob_level + 1)
  			{
  				ob_end_flush();
  			}
  			ob_start();
  			include(APPPATH.'errors/error_php.php');
  			$buffer = ob_get_contents();
  			ob_end_clean();
  			echo $buffer;
  		}


 }
 // END Exceptions Class

 /* End of file Exceptions.php */
 /* Location: ./system/core/Exceptions.php */